Wed, 30 Jan 2002 21:25:03 -0500
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On Wed, 30 Jan 2002 15:11:32 EST, Amy Stinson <[log in to unmask]> said:
> I have my lists set to no attachments. MYPARTY slipped through. How did that
> happen and how can I stop it?--
It happened because MYPARTY leveraged a bogosity in Outlook, where it
assumes that any line that starts with 'begin ' is the start of an old
file transfer protocol called 'uuencode' that was popular before MIME and
base-64 encoding. The only software that thinks it's an attachment is Outlook.
Go figure. ;)
How to stop it?
1) Shoot all your Outlook users - they're easy to identify because they
send everybody mail every few weeks.
2) Use a virus-scanning front-end for your mail systems (probably an option
only if you're a fairly large site). We've been mostly happy with our
Mirapoint systems, except for their tendency to degrade rather ungracefully
under *really* high load. I think Mirapoint didn't believe us when we
told them that "yes, we really *DO* often have over 1,000 simultaneous
inbound SMTP connections".
Valdis Kletnieks
Computer Systems Senior Engineer
Virginia Tech
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